It's a wrapper library on top of IndexedDB, which is a storage of API of the browser. IndexedDB was introduced more than 10 years ago when JavaScript was still a bad language, therefore, the API of IndexedDB is horrible. Dexie makes the API a bit nicer.

But IndexedDB is slow as hell.

Here is my prediction: we will move away from browsers and create our own browser-like super application/client that can loads other clients.

The nostr browser will be implemented in Rust and the scripting language is a new language and the layout is not CSS!